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CVE-2024-42142— net/mlx5: E-switch, Create ingress ACL when needed

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于net/mlx5模块中在使用E-switch时，如果vport元数据匹配和优先级标签被启用，将创建入口ACL，但active-backup lag模式也使用它，这与vport元数据匹配和优先级标签无关。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1542.002 · Component Firmware

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 1749c4c51c16e3e078faae0a876d01bafb187a74< bc3ff8d3c05044de57865ebbb78cca8f7da3e595 affected
1749c4c51c16e3e078faae0a876d01bafb187a74< 3e3551f8702978cd2221d2614ca6d6727e785324 affected
1749c4c51c16e3e078faae0a876d01bafb187a74< 83bc1a129f7fd0d7d05036ceb7ee69102624e320 affected
1749c4c51c16e3e078faae0a876d01bafb187a74< b20c2fb45470d0c7a603613c9cfa5d45720e17f2 affected
5.18 affected
< 5.18 unaffected
6.1.98≤ 6.1.* unaffected
6.6.39≤ 6.6.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-42142

Vulnerability Information
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Vulnerability Title
net/mlx5: E-switch, Create ingress ACL when needed
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: E-switch, Create ingress ACL when needed Currently, ingress acl is used for three features. It is created only when vport metadata match and prio tag are enabled. But active-backup lag mode also uses it. It is independent of vport metadata match and prio tag. And vport metadata match can be disabled using the following devlink command: # devlink dev param set pci/0000:08:00.0 name esw_port_metadata \ value false cmode runtime If ingress acl is not created, will hit panic when creating drop rule for active-backup lag mode. If always create it, there will be about 5% performance degradation. Fix it by creating ingress acl when needed. If esw_port_metadata is true, ingress acl exists, then create drop rule using existing ingress acl. If esw_port_metadata is false, create ingress acl and then create drop rule.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于net/mlx5模块中在使用E-switch时，如果vport元数据匹配和优先级标签被启用，将创建入口ACL，但active-backup lag模式也使用它，这与vport元数据匹配和优先级标签无关。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 1749c4c51c16e3e078faae0a876d01bafb187a74 ~ bc3ff8d3c05044de57865ebbb78cca8f7da3e595 -
Linux Linux 5.18 -

II. Public POCs for CVE-2024-42142

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III. Intelligence Information for CVE-2024-42142

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Other References for CVE-2024-42142 (4)

Same Patch Batch · Linux · 2024-07-30 · 70 CVEs total

CVE-2024-42108 9.8 CRITICAL net: rswitch: Avoid use-after-free in rswitch_poll()
CVE-2024-42225 8.3 HIGH wifi: mt76: replace skb_put with skb_put_zero
CVE-2024-42120 7.8 HIGH drm/amd/display: Check pipe offset before setting vblank
CVE-2024-42115 7.8 HIGH jffs2: Fix potential illegal address access in jffs2_free_inode
CVE-2024-42112 7.8 HIGH net: txgbe: free isb resources at the right time
CVE-2024-42111 7.8 HIGH btrfs: always do the basic checks for btrfs_qgroup_inherit structure
CVE-2024-42117 7.8 HIGH drm/amd/display: ASSERT when failing to find index by plane/stream id
CVE-2024-42109 7.8 HIGH netfilter: nf_tables: unconditionally flush pending work before notifier
CVE-2024-42162 7.8 HIGH gve: Account for stopped queues when reading NIC stats
CVE-2024-42105 7.8 HIGH nilfs2: fix inode number range checks
CVE-2024-42104 7.8 HIGH nilfs2: add missing check for inode numbers on directory entries
CVE-2024-42103 7.8 HIGH btrfs: fix adding block group to a reclaim list and the unused list during reclaim
CVE-2024-42099 7.8 HIGH s390/dasd: Fix invalid dereferencing of indirect CCW data pointer
CVE-2024-42132 7.6 HIGH bluetooth/hci: disallow setting handle bigger than HCI_CONN_HANDLE_MAX
CVE-2024-42133 7.6 HIGH Bluetooth: Ignore too large handle values in BIG
CVE-2024-42152 7.5 HIGH nvmet: fix a possible leak when destroy a ctrl during qp establishment
CVE-2024-42110 7.5 HIGH net: ntb_netdev: Move ntb_netdev_rx_handler() to call netif_rx() from __netif_rx()
CVE-2024-42145 7.5 HIGH IB/core: Implement a limit on UMAD receive List
CVE-2024-42123 7.0 HIGH drm/amdgpu: fix double free err_addr pointer warnings
CVE-2024-42224 7.0 HIGH net: dsa: mv88e6xxx: Correct check for empty list

Showing top 20 of 70 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42142

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